KR102497123B1 - Fall Prevention Fence System - Google Patents

Abstract

The present invention relates to a fall prevention fence system. The fall prevention fence system includes: a pillar installed to be erect at fixed intervals; multiple wire ropes individually arranged at intervals in the upper part and the lower part to penetrate the multiple pillars in a horizontal direction; and a shock transmission unit including a capturing net bound to the rear side of the wire rope and one or more wire ropes for shock transmission, which are to transmit an impact load in the horizontal direction between an upper wire rope and a lower wire rope vertically separated, wherein a shock attenuating unit is connected to the pillar on an end at both ends of each wire rope for shock transmission. Therefore, the fall prevention fence system can prevent damage to a fall prevention fence by effectively absorbing the impact load even when the large impact load is applied to a part of the fall prevention fence due to falling rock. Moreover, the fall prevention fence system can prevent an accident by reinforcing a fall prevention function of an inclined surface.

Description

Fall Prevention Fence System {Fall Prevention Fence System}

The present invention relates to a fallfall prevention fence system, and more particularly, to a fallfall prevention fence system for securing excellent rigidity while effectively buffering, absorbing and distributing impact energy due to occurrence of rocks on a slope.

In general, a rockfall prevention fence is installed at the boundary of the road that faces the slope made by cutting the rock layer and the soil layer to prevent safety accidents by blocking and absorbing the impact energy in the event of loss of soil or falling rocks.

However, if these fallout prevention fences do not effectively absorb and disperse the impact energy applied locally, the rockfall penetrates the wire mesh and wire rope and invades the road, or the durability deteriorates over time, threatening the occurrence of safety accidents. .

In order to solve this problem, in relation to the anti-fallen fence that strengthens the structure of the wire rope to block the fallout along with the wire mesh, Korean Utility Model Registration No. 20-0287832 (registered on August 21, 2002, hereinafter referred to as 'Prior Art Document 1') has been proposed.

The prior art document 1 relates to a wire rope spacing device for a fall prevention fence, as shown in FIG. The distance between the wire ropes (3) is maintained by including the wire ropes (3) densely arranged between the plurality of pillars and the spacing means (2) installed vertically in the center of the wire ropes (3) to prevent falling rocks. made it possible

However, in the prior art document 1, the wire rope distance maintaining device of the conventional rockfall prevention fence is not provided with a buffering means in preparation for sudden impact when a rockfall occurs, so that the wire mesh or wire rope 3 is torn, etc. occurred, and accordingly, there was a problem requiring frequent repair work. In addition, when the impact caused by falling rocks is continuously applied to the wire rope, there is a problem that the fatigue load is accumulated on the post and the buried portion of the post through the wire rope, causing a decrease in bearing capacity.

In addition, in relation to the reinforcing structure of the anti-fallen fence, Korean Patent Publication No. 10-2019-0090188 (published on August 1, 2019, hereinafter referred to as 'Prior Art Document 2') has been proposed.

The prior art document 2 relates to a tunnel-type rockfall protection facility having a variable support for shock absorption, and as shown in FIG. 1B, the foundation support 5 buried in the ground and the upper end of the foundation support 5 A plurality of pillars 6 provided in, and a variable pillar 7 are installed at the ends of the pillars 6, and the skeleton composed of the plurality of pillars is supported by a transverse elastic wire rope 8 A wire mesh (9) is provided to primarily absorb collision energy with falling rocks, and the variable post (7) is tilted at a certain angle when colliding with falling rocks to secondarily absorb collision energy.

However, in the rockfall protection facility of Prior Art Document 2, in order to resist the stress applied to the variable pillar 7 in the event of a rockfall, the coupling structure between the variable pillar 7 and the curved pillar 6 As it is complicated, construction is not easy, and as shown in FIG. There was a problem that a lot of cost was required according to this, and there was a problem that the assembly and disassembly process was cumbersome.

Furthermore, as shown in FIG. 2, the conventional rockfall prevention fence has a structure in which the collision energy of the falling rocks is partially buffered by the splice to which the ends of the wires are bound, but when the actual falling rocks are applied, the collision energy is not buffered and damage occurs There was a limit in that the buffer and absorption of the collision energy could not be achieved.

Meanwhile, the research of the present invention was filed as a result of research supported by the Technology Development Program (Task Number: 1425162668) of the Ministry of SMEs and Startups in 2020 (This work was supported by the Technology development Program (1425162668) funded by the Ministry of SMEs and Startups (MSS, Korea)).

Republic of Korea Registered Utility Model No. 20-0287832 (registered on August 21, 2002) Republic of Korea Patent Publication No. 10-2019-0090188 (2019.08.01. Publication)

The present invention has been devised to solve the above problems, and even if the impact load is concentrated in a local area due to the large size of the rockfall or the high speed of the rockfall, it buffers and absorbs the transmitted rockfall impact so that the trapping net is not deformed or damaged, and the structural Stability can be secured, and accordingly, the purpose is to provide a fall prevention fence system that can prevent safety accidents by further strengthening the fall prevention function of the slope.

In addition, another object of the present invention is to absorb the impact energy of the falling rock by delaying the behavior of the wire rope by forming a frictional force by the impact damping unit of the shock transmission unit when force is applied to the wire rope supporting the trapping net by the falling rock An object of the present invention is to provide a fall prevention fence system capable of providing a structure that can be used.

Fall prevention fence system according to an embodiment of the present invention, the holding poles 100 installed at regular intervals; A plurality of wire ropes 200 spaced apart from each other at upper and lower portions so as to pass through the plurality of posts 100 in the transverse direction; A catch net 300 bound to the rear of the wire rope 200; And between the upper wire rope 210 and the lower wire rope 220 spaced vertically, one or more shock transmission wire ropes 410 for transmitting an impact load in the transverse direction extend the plurality of posts 100 in the transverse direction. Provided to pass through, and at both ends in the longitudinal direction of each shock transmission wire rope 410, a shock attenuation unit 400 in which a shock attenuation unit 420 is coupled to the end side post 100A; including, but the shock attenuation unit 400 The portion 420 has a pair of flange portions 422a protrudingly formed so as to face both sides of the pair of end-side supports 100A facing each other, and connects the pair of flange portions 422a to one side at the same time. A fixing plate 422 is formed to extend and protrudes in a cantilever shape from the end side post 100A, and a damping clip 421 is attached to the fixing plate 422 in a state provided to hold the wire rope 410 for shock transmission. When an impact load is generated by pressing and fastening, a predetermined frictional resistance is formed in the wire rope 410 for impact transmission, and the fastener 423 is coupled so as to penetrate the pair of flange parts 422a and the end side post 100A. In addition, the wire rope spacing member 500 is bound to the plurality of wire ropes 410 for shock transmission spaced apart vertically, so that the gap between the wire ropes 410 for shock transmission even under the shock load transmitted to the catch net 300 While maintaining in a certain range, the wire rope spacing member 500 has a support portion 510 formed flat at a position corresponding to the wire rope 200 and the wire rope 410 for shock transmission, and the support portion ( 510) is a metal plate in which a bending damping part 520 having a wavy structure repeatedly bent forward and backward is formed in the vertical direction, and the support part 510 includes a wire rope 200 or a wire rope 410 for shock transmission. ) is characterized in that the catch net 300 is also bound together with the fastening clip 530 so that transverse displacement is possible.

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In addition, the wire rope spacing member 500 may be disposed in the center between adjacent posts 100.

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According to the embodiment of the present invention, even if an impact is applied by a rockfall, frictional resistance is formed by the impact damping unit of the impact transmission unit, and the wire rope is stretched and deformed to the front within the friction section to mitigate the impact of the rockfall. Structural stability of the fall prevention fence can be more safely maintained as the stress transmitted to each member such as the trapping net can be reduced.

In addition, even if adjacent props are buried at a certain distance or more by the wire rope spacing member provided between the props, the wire rope spacing member effectively buffers and absorbs the initial impact energy and applies it to the capture net and wire rope Since it can attenuate the impact energy that is generated, the protection efficiency can be maximized, the durability is improved, and the construction period and cost can be reduced relatively.

Furthermore, the wire rope spacing member maintains a constant distance between the vertically adjacent wire ropes and the wire rope for shock transmission, so that the shock absorption efficiency can be further improved, and the shock attenuation efficiency of the shock damping unit can also be improved. there is.

Figure 1a is a front view showing the shape of a tunnel-type rockfall protection facility having a variable support for shock absorption according to Prior Art Document 1.
Figure 1b is a perspective view showing a tunnel-type rockfall protection facility having a variable support for shock absorption according to Prior Art Document 2.
FIG. 1C is a partially enlarged view showing in detail the structure of a variable post portion of a tunnel-type rockfall protection facility having a variable post portion for shock absorption according to Prior Art Document 2. Referring to FIG.
2 is an image of a state in which a splice is damaged in a conventional fallout prevention fence.
Figure 3 is a front view showing a fall prevention fence system according to an embodiment of the present invention.
4 and 5 are a side view and a coupling state diagram showing the shape of the impact damping unit according to an embodiment of the present invention.
6 is a conceptual diagram illustrating a state in which an impact caused by a falling rock is offset by frictional resistance through an impact attenuator according to an embodiment of the present invention.
7 and 8 are a combined state diagram and a side view showing a fall prevention fence system according to an embodiment of the present invention.
Figure 9 is a conceptual diagram showing a state in which the impact caused by falling rocks is offset by the shape deformation of the wire rope spacing member according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail based on the matters shown in the drawings.

First, referring to FIGS. 3 and 6 , a rockfall prevention fence system capable of attenuating an impact using frictional resistance according to an embodiment of the present invention will be described.

In general, a fall prevention fence is a plurality of wire ropes 200 and captures on a prop 100 installed at regular intervals on the ground to prevent loss of a large amount of soil or falling rocks in a place where a slope is formed, such as a mountain slope. A net 300 is deployed. However, such a conventional rockfall prevention fence has a problem in that when a concentrated load is generated in a local area due to a rockfall, the trapping net 300 is damaged, resulting in a rear rockfall or collapse of the ground.

In order to solve this problem, the present invention relates to a fall prevention fence system capable of effectively absorbing and dispersing the impact caused by falling rocks even when a concentrated load occurs in a local area. For this purpose, a plurality of wire ropes 200 are provided at regular intervals. The upper wire rope 210 and the lower wire rope 220 are arranged separately at the upper and lower portions so as to pass through the plurality of pillars 100 installed in the transverse direction, respectively, and the catch net 300 is wire rope ( 200) is bound to the rear.

On the other hand, in the fall prevention fence system of the present invention, one or more wire ropes 410 for shock transmission of the shock transmission unit 400 are provided between the upper wire rope 210 and the lower wire rope 220 spaced vertically, so that one or more wire ropes 410 are provided The technical difference exists in that the impact load by the transverse direction is transmitted to induce the dispersion of the stress transmitted to each member.

At this time, it is preferable that the wire ropes 410 for shock transmission are spaced apart from each other so as to equally divide the interval between the upper wire rope 210 and the lower wire rope 220 in order to effectively distribute the impact load. In addition, the upper and lower wire ropes 210 and 220 and the wire rope 410 for shock transmission can be made of wires having different tensile strengths and diameters, as well as having the same specifications. .

In addition, at both ends of each wire rope 410 for shock transmission, the shock attenuating unit 420 of the shock transmission unit 400 is coupled to the end-side post 100, so that an impact greater than the tensile force previously applied to the wire rope 410 When a load is generated, the shock attenuator 420 of the shock transmission unit 400 induces the frictional slip of the wire rope 410 so that the shock caused by the falling rock can be buffered.

In addition, in the present invention, the catch net 300 is provided with a high-strength steel wire having 2.8 to 4.0 mm and 600 to 2040 Mpa, so that sufficient net tension can be maintained. At this time, the high-strength steel wire is provided with a single galvanized coating, which can prevent the generation of harmful substances generated in the coating process of the existing net. It is desirable to allow

Hereinafter, the structure of the impact attenuator 420 will be described in detail with reference to FIGS. 4 and 5 .

The shock damping part 420 is provided so that the damping clip 421 fastened to the fixing plate 422 grips the wire rope 410 for shock transmission, and the damping clip 421 has the fixing plate 422 It is pressed and fastened so that a predetermined frictional resistance is formed between the wire ropes 410 for shock transmission.

At this time, as shown in FIG. 5, the fixing plate 422 has a pair of flange parts 422a protrudingly formed so as to face the outer circumferential surface of both sides of the support 100, and the fastener passing through the flange part 422a ( By means of 423, the fixing plate 422 can be stably fixed to the end-side support 100 with both flanges 422a in contact. According to the structure described above, as frictional resistance is formed by the impact attenuating unit 420 of the impact transmission unit 400, the wire rope 410 for impact transmission is stretched and deformed to the front within the friction section, resulting in impact caused by falling rocks. , and as a result, the stress transmitted to each member such as the plurality of supports 100 and the trapping net 300 can be reduced, thereby maintaining the structural stability of the anti-fall fence more safely.

Thus, according to the shock attenuating unit 420 of the present invention, it is formed at the end of each shock transmission wire rope 410 and can replace the splice formed in the conventional fall prevention fence, and is resistant to impact like the existing splice. It is possible to effectively buffer and absorb the impact caused by falling rocks by solving the problem of being easily damaged by

In addition, the wire rope 410 for shock transmission is provided so as to pass through the plurality of posts 100 in the transverse direction, so even if an impact is applied by a falling rock, the shock load transmitted through the wire rope 410 for shock transmission is transmitted through the wire rope It can be evenly distributed and delivered to the plurality of pillars 100 through 410.

Hereinafter, the structure of the anti-rockfall fence system capable of attenuating impact by using shape deformation according to an embodiment of the present invention will be described with reference to FIGS. 7 to 9.

In the present invention, in order to absorb and attenuate the initial impact energy, the wire rope spacing member 500 provided vertically between adjacent posts 100 is bound to a plurality of wire ropes 410 for shock transmission spaced vertically. It can be. Accordingly, stress can be evenly distributed in the vertical direction through the wire rope spacing member 500 even under the local impact load applied to the top or bottom through the catch net 300, and the wire ropes for shock transmission spaced apart from each other As the distance between 410 is maintained within a certain range, the shock absorbing efficiency can be further improved, and the shock absorbing efficiency of the shock damping unit 420 of the shock absorbing unit 400 can also be improved.

At this time, the wire rope spacing member 500 is a metal plate provided in the vertical direction to have a wavy structure repeatedly bent in the front and rear directions, and shock absorption can be expected at a low cost, so the rigidity of the fall prevention fence can be effectively improved. There are benefits to reinforcing.

In addition, as shown in FIG. 7, the gap maintaining member 500 includes a support portion 510 formed flat at a position corresponding to the wire rope 200 and the wire rope 410 for shock transmission, and the plurality of It may be composed of a bending damping part 520 provided between the support parts 510, and the bending damping part 520 has a wavy structure repeatedly bent forward and backward, so that bending deformation is easy when a rock falls occurs. , and the deformation is induced by the impact load applied due to the falling rock, so that the impact energy can be effectively absorbed.

In addition, as shown in FIG. 8, the support part 510 is provided to come into contact with the trapping net 300, and when an external force is applied, the load transmitted to the trapping net 300 deformed by the external pressure is transferred to the shock transmission unit 400. And it can be evenly distributed in the upper wire rope 210, the lower wire rope 220 and the holding 100.

In addition, in the support part 510 of the wire rope spacing member 500, a fastening clip ( 530), the load can be transferred to the adjacent gap maintaining member 500 to absorb the shock, and when partial damage occurs, it can be quickly replaced, and the construction is very simple, so the air can be shortened. There is an advantage.

At this time, as the catch net 300 is also bound together by the fastening clip 530, the impact load applied to the first catch net 300 is effectively offset through the wire rope spacing member 500 this is preferable

In addition, the wire rope spacing member 500 is preferably disposed in the center between adjacent pillars 100 in order to effectively disperse the stress generated in the center of the wire rope 410 when a rock falls. However, it is not limited thereto, and the wire rope spacing members 500 may be provided in plurality between adjacent posts 100, and in this case, they may be symmetrically arranged around the posts 100.

According to the structure described above, the bending and damping part 520 is deformed as shown in FIG. 9 when a rock falls and partially absorbs an impact load, so that the section between the pillars 100 and the pillars 100 is deformed. As the gap can be formed wide, material costs can be reduced, and even if the gap between adjacent pillars 100 is buried widely, the impact energy applied to the pillars is damped by buffering the impact load transmitted to the pillars 100. And, it is possible to prevent damage to the holding 100. That is, since the wire rope spacing member 500 attenuates the impact energy applied to the fall prevention fence of the present invention, protection efficiency can be maximized.

It will be understood that the rockfall prevention fence system according to the present invention described above can be implemented in other specific forms without changing the technical spirit or essential features of the present invention by those skilled in the art to which the present invention belongs. .

Therefore, the embodiments described above should be understood as illustrative in all respects and not limiting, and the scope of the present invention is indicated by the claims to be described later rather than the foregoing detailed description, and the meaning and meaning of the claims All changes or modified forms derived from the scope and equivalent concept should be construed as being included in the scope of the present invention.

100: holding 200: wire rope
210: upper wire rope 220: lower wire rope
300: catch net 310: wire rope
400: shock transmission unit 410: wire rope for shock transmission
420: shock attenuation unit 421: attenuation clip
422: fixed plate 423: fastener
500: wire rope spacing member 510: support
520: bending damping unit 530: fastening clip

Claims (9)

Holding posts 100 that are installed at regular intervals;
A plurality of wire ropes 200 spaced apart from each other at upper and lower portions so as to pass through the plurality of posts 100 in the transverse direction;
A catch net 300 bound to the rear of the wire rope 200; and
Between the upper wire rope 210 and the lower wire rope 220 spaced vertically, one or more shock transmission wire ropes 410 for transmitting shock loads in the transverse direction pass through the plurality of posts 100 in the transverse direction Including,
The impact attenuating portion 420 has a pair of flange portions 422a protruding and connecting the pair of flange portions 422a so as to face the pair of facing side surfaces of the end side support 100A. At the same time, a fixing plate 422 is formed to extend to one side and protrudes in a cantilever shape from the end side post 100A, and the fixing plate ( 422), when an impact load is generated, a predetermined frictional resistance is formed in the wire rope 410 for impact transmission, and the fastener 423 penetrates the pair of flange parts 422a and the end side post 100A. ) is combined,
The wire rope spacing member 500 is bound to the plurality of wire ropes 410 for shock transmission spaced apart vertically, so that the spacing of the wire ropes 410 for shock transmission is constant even during the shock load transmitted to the catch net 300. Maintained within the range, the wire rope spacing member 500 has a support portion 510 formed flat at a position corresponding to the wire rope 200 and the wire rope 410 for shock transmission, and the support portion 510 It is a metal plate in which a bending damping part 520 having a wavy structure repeatedly bent forward and backward between them is formed in the vertical direction, and the wire rope 200 or the wire rope 410 for shock transmission is provided on the support part 510. A rockfall prevention fence system, characterized in that bound with the fastening clip 530 together with the trapping net 300 to enable transverse displacement.
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The wire rope spacing member 500 is a rockfall prevention fence system, characterized in that disposed in the center between the adjacent holding posts (100). delete

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